Physics Review Work and Energy

Which of the following is a device that transforms kinetic energy into electrical energy?

• blender

• car engine

• hydroelectric dam

• flashlight

In physics, work occurs when a _____ acts on an object to move it some distance from the start point.

• Power

• Force

• Velocity

• Energy

Atoms have kinetic energy because they are always ______.

• exploding

• motionless

• reacting

• moving or at least vibrating

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Thermal energy always moves from a ______ area to a ______ area.

• bigger, smaller

• colder, hotter

• higher, lower

• hotter, colder

Temperature measures the ______ kinetic energy of the particles in a substance.

• average

• maximum

• minimum

• total

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NGSS.MS-PS1-4

NGSS.MS-PS3-1

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Light, Sound, Heat and Motion are indicators that an object has _____________.

• Energy

• Mass

• Density

• Volume

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As the kinetic energy of the molecules in a substance increases, the temperature _________________.

• decreases

• increases

• stays the same

• atoms don't have kinetic energy

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NGSS.MS-PS3-4

Will you use more power running up the stairs or walking up the stairs?

• Running up the stairs.

• Walking up the stairs.

• The same in both.

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Define potential difference

• The amount of energy per charge

• The amount of charge per second

• The amount of charge per energy

• The amount of voltage per second

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In physics, what is the formula for calculating work done when a force is applied?